<template>
  <div>

    <div class="search">
      <input class="search-input" type="text" v-model="keyword"
             placeholder="请输入城市名或拼音">
    </div>
    <div class="search-content"ref="searchv" v-show="keyword">
      <ul>
        <li class="search-item border-topbottom"  v-for="item  of list" @click="handleCityClick(item.name)">{{item.name}}</li>
        <li class="search-item border-topbottom" v-show="hasNodata">没有数据</li>
      </ul>
    </div>

  </div>

</template>

<script>
  import  Bscroll from  'better-scroll'
  import  {mapMutations} from 'vuex'
  export default {
    name: "Search",
    props: {
      cities: Object
    },
    data() {
      return {
        keyword: '',
        list: [],
        timer: null
      }
    },
    computed:{
      hasNodata(){
        return !this.list.length
      }
    },
    methods:{
      handleCityClick(city){
        // this.$store.commit('changeCity',city)
        this.changeCity(city)
        this.$router.push('/')
      },
      ...mapMutations(['changeCity'])
    },
    mounted (){
      this.scroll=new Bscroll(this.$refs.searchv)
    },
    watch: {
      keyword() {
        if (this.timer) {
          clearTimeout(this.timer)
        }
        if(!this.keyword){
          this.list=[]
          return
        }
        this.timer = setTimeout(() => {
          const result = []
          for (let i in this.cities) {
            this.cities[i].forEach((value) => {
              if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                result.push(value)
              }
            })
          }
          this.list = result
        }, 100)
      }
    }
  }
</script>

<style scoped>
  .search {
    height: .72rem;
    padding: 0.1rem;
    background-color: #25a4bb;
    margin-top: 0;
  }

  .search-input {
    box-sizing: border-box;
    width: 100%;
    height: .62rem;
    line-height: .62rem;
    text-align: center;
    border-radius: .06rem;
    color: #666;
  }

  .search-content {
    overflow: hidden;
    position: absolute;
    top: 1.9rem;
    left: 0;
    right: 0;
    bottom: 0;
    background: #eee;
    z-index: 1;
  }
  .search-item{
    line-height: .62rem;
    padding-left: .2rem;
    color: #666;
    background-color:#ffffff;
  }

</style>
